278364710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{20789}}^1$

素因数の和:20912

約数の個数: 32

約数和(自身を含む): 544864320

約数和(自身を除く): 266499610

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 2678, 6695, 13390, 20789, 41578, 103945, 207890, 270257, 540514, 1351285, 2141267, 2702570, 4282534, 10706335, 21412670, 27836471, 55672942, 139182355, 278364710]

約数ペア:

[(1, 278364710), (2, 139182355), (5, 55672942), (10, 27836471), (13, 21412670), (26, 10706335), (65, 4282534), (103, 2702570), (130, 2141267), (206, 1351285), (515, 540514), (1030, 270257), (1339, 207890), (2678, 103945), (6695, 41578), (13390, 20789)]